Mechanical Engineering MCQs

A. Cast iron
B. Pig iron
C. Wrought iron
D. Malleable iron

A. Silicon and sulphur
B. Phosphorous, lead and sulphur
C. Sulphur, graphite and aluminium
D. Phosphorous and aluminium

A. Copper
B. Chromium
C. Nickel
D. Silicon

A. 1539°c
B. 1601°c
C. 1489°c
D. 1712°c

A. Austenite
B. Martensite
C. Pearlite
D. Cementite

A. high maehinability
B. low melting point
C. high tensile strength
D. good fluidity

A. Improves wear resistance, cuttinability and toughness
B. Refines grain size and produces les tendency to carburisation, improve corrosion and heat resistant proper ties
C. Improves cutting ability and reduce hardenability
D. Gives ductility, toughness, tensile strength and anti corrosion property:

A. Adding carbon up to 2.8%
B. Adding carbon up to 6.3%
C. Adding carbon up to 0.83%
D. Adding small quantities of copper

A. Hot hardness
B. Toughness
C. Wear resistance
D. Sharp cutting edge

A. Aluminium
B. Low carbon steel
C. Medium carbon steel
D. High carbon steel